Derek Bennett of the Iraq and Afghanistan Veterans of America says the younger generation of former military is "losing confidence" in VA Secretary Eric Shinseki, and President Barack Obama must do more than talk about the problem.

"There have been plenty of studies... alleging gaming of the system," Bennett said on "Fox News Sunday." "At some point we have to stop studying and take action."

Obama sent Deputy White House Chief of Staff Rob Nabors to Phoenix to look into the scandal of secret waiting lists that masked long wait times for sick veterans. The scandal was first uncovered at the Phoenix VA hospital, but allegations have since emerged at several VA hospitals across the country.